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The Taylorator – All Your Frequencies Are Belong to Us

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Re: The Taylorator – All Your Frequencies Are Belong to Us

#81

Post by ChuckMcM »

myself248 wrote: post #5

With some filtering on the output to knock down harmonics and aliasing noise, and as long as the power output is low enough, this could actually be legal in the US. IANAL, etc, but this is my understanding: It's actually ridiculously tricky to measure transmitter power output in the terms that the FCC regs are written in, but the rule of thumb is that, given the receiver sensitivity of a typical radio, if you lose th…

Basically if anyone receives it that wasn't expecting to it's illegal. That is at the core of the FCC rules in the US, you can't interfere with the lawful use of the band, nor can you cause "interference" on unused bands. That said, the process for prosecuting you is long and somewhat convoluted as they have to file a report, then the FCC will confirm the report, Etc.

But this kind of project (and a similar I saw that broadcasts on every FRS[1] channel at the same time) is a great example of something you can do with SDR that you cannot (easily) do with transistors and boring old analog radio.[2]

It is one of the reasons I enjoy it (playing around with SDRs and DSP) so much as I keep learning new things.

[1] Family Radio Service

[2] I know, I know, building 20 modulators isn't all that tough yadda yadda.

Re: The Taylorator – All Your Frequencies Are Belong to Us

#82

Post by argilo »

malwrar wrote: post #28

I might have missed it, how does OP broadcast across 80mhz with a 20mhz SDR? I think my mental model about SDR capability is wrong, does sample rate not necessarily gate the range at which an SDR can TX/RX? Really funny idea!

An SDR's sample rate only limits its bandwidth. Most devices include a mixer, which allows the transmitted or received signal to be shifted in frequency by an amount much larger than the bandwidth.

Re: The Taylorator – All Your Frequencies Are Belong to Us

#83

Post by Walf »

This reminds me of a practical application of such tech that never really made it. A chap had his invention on (Australian) ABC's The New Inventors, 20 years ago, named Emergalert. It could announce the presence of nearby emergency vehicles. It seemed like such an obviously good idea.

https://web.archive.org/web/20040923155023/http://www.emerga...

Re: The Taylorator – All Your Frequencies Are Belong to Us

#85

Post by thomquaid »

dmd wrote: post #79
vel0city wrote: post #29

Earlier quoted context omitted.

If it's intended for personal consumption it's fine. It's not copyright infringement to hear my neighbor's stereo if it's a bit loud. It is if he's using it commercially for hosting a block party selling tickets it's a problem.

Ah, but if your neighbor's stereo is faintly audible in the distance while you record a screencast, your video will get taken down off Youtube very quickly.

Thats because Youtube doesnt want to broadcast copyright work in any way as a courtesy for rights holders' trade groups that have asked, not because of regulatory or legal consequences though.

Re: The Taylorator – All Your Frequencies Are Belong to Us

#86

Post by emsign »

vel0city wrote: post #29
RobotToaster wrote: post #24

Earlier quoted context omitted.

> if you lose the signal when you're more than 200 feet from the transmitter, you're probably in the clear. With the FCC maybe, but someone far worse will be interested, the RIAA. It's copyright infringement by illegal broadcast.

If it's intended for personal consumption it's fine. It's not copyright infringement to hear my neighbor's stereo if it's a bit loud. It is if he's using it commercially for hosting a block party selling tickets it's a problem.

Nah, don't kid yourself. Tech lik€ this is NOT fine. You're a douche if you deploy this. It may be technically interesting but just a dick move to use it.

Re: The Taylorator – All Your Frequencies Are Belong to Us

#87

Post by jes5199 »

brk wrote: post #76
badc0ffee wrote: post #61

The CRT enthusiasts on Reddit would love something like this, but for analog TV channels. Something that people ask occasionally is how to use their vintage TV's tuner to receive digital TV. But they don't want to tune it to channel 3 and then change the channel with a digital TV box; they actually want to change the channel with the old tuner. The current advice seems to be to spend $hundreds to get an analog CATV h…

It’s not that hard or expensive. CATV analog modulators were common in the past. I had 8 in-home TV channels until our cable company went digital.

there are cheap, new analog TV modulators/broadcasters available on ebay now

Re: The Taylorator – All Your Frequencies Are Belong to Us

#88

Post by garbagewoman »

RobotToaster wrote: post #24
myself248 wrote: post #5

With some filtering on the output to knock down harmonics and aliasing noise, and as long as the power output is low enough, this could actually be legal in the US. IANAL, etc, but this is my understanding: It's actually ridiculously tricky to measure transmitter power output in the terms that the FCC regs are written in, but the rule of thumb is that, given the receiver sensitivity of a typical radio, if you lose th…

> if you lose the signal when you're more than 200 feet from the transmitter, you're probably in the clear. With the FCC maybe, but someone far worse will be interested, the RIAA. It's copyright infringement by illegal broadcast.

Why do you think they would be interested?

Re: The Taylorator – All Your Frequencies Are Belong to Us

#89

Post by vel0city »

dmd wrote: post #79
vel0city wrote: post #29

Earlier quoted context omitted.

If it's intended for personal consumption it's fine. It's not copyright infringement to hear my neighbor's stereo if it's a bit loud. It is if he's using it commercially for hosting a block party selling tickets it's a problem.

Ah, but if your neighbor's stereo is faintly audible in the distance while you record a screencast, your video will get taken down off Youtube very quickly.

Posting it publicly to YouTube is no longer for personal consumption.

Do it with a private video, it won't be taken down.

Re: The Taylorator – All Your Frequencies Are Belong to Us

#90

Post by vel0city »

emsign wrote: post #86
vel0city wrote: post #29

Earlier quoted context omitted.

If it's intended for personal consumption it's fine. It's not copyright infringement to hear my neighbor's stereo if it's a bit loud. It is if he's using it commercially for hosting a block party selling tickets it's a problem.

Nah, don't kid yourself. Tech lik€ this is NOT fine. You're a douche if you deploy this. It may be technically interesting but just a dick move to use it.

I was just speaking from a copyright perspective here. If you're causing interference on your neighbor's radio you're causing a problem, fully agreed.
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